Equipment for wireless receiving or transmitting apparatus



Dec.v 27, 1927.

s. LOEWE 1654296 EQUIf-MENT FOR WIRELESS RECEIVING OR TRANSMITTINGAPARATU Filed Aug. 26. 1921 ly Elepwne ana/@MM ATTO/Mfrs Patented 27,1921.

UNITED As'ra'rlszs PATENT lo rlf'-icr..

sIEGMUND Lonwn,v or BERLIN, GERMANY, AssrGNon 'ro wEs'rINeIzoUsE me aMANUFACTURING courANY, A conroEArIoN or PENNSYLVANIA.

EQUIPMENT FOB WIRELESS RECEIVING 0B TBANV'KSHITTING Application medAugust 26, 1921, Serial No. 495,783, and 1n Germany December 20, 1915.

(enum Inman :um `raovIsIolsrs-or THE Aer or nnen a, 1921, 41 sur. L.,ma.)

My present invention relates to the practical construction of receivingor transmitting apparatus for wireless stations. Wireless receivingapparatus generally contains rather complicated connections, so thatanyone openinolthe apparatus must take considerable troule to trace'outsuch connections. To facilitate this work various colours have beenappliedto the various circuits, lfor example, the conductors of theantenna circuit have becncoloured green, those o'f'th'e secondarycircuit red and'so on.I "l

My present invention discloses a new procedure. To exemplify this, theapparatus appertaining to the secondary vcircuit, such as coils,condensers and' switches, when required, would' be combined-'into oneindependent Whole, likewise' all parts of the aperiodic circuit bythemselves, likewise all parts appertaining to the antenna circuit bythemselves, and finally all parts appertaining to a separate testdevice,if present, by themselves.

An embodiment of m invention isillustrated by way of examp e in theaccompany;-k

ing drawing, wherein Fig. 1 is a perspective view showing an assembly ofthe independent apparatus elements.

Fig. 2 is a perspective view of a modified embodiment offmy invention.

Fi 3 is still another modification.

Re erring to Fig. 1 the antenna coil 1 and the antenna connection 2 aremounted in a box 10, the secondary coil and accessories in a box 11, thetelephone 4 and detector 5 in a box 12, the test clrcuit 6 in a box 13and the tertiary circuit in a box 14. The boxes 10 and lll-can ifdesired be placed alongside one another.

Broadly speaking, a receiving equipment according to the presentinvention consists of a succession or series of independentapparatus-elements, which can be manufactured singly, which permit ofindependent testing, and which may be-exchanged as desired :tor other aparatus-elements either similar or of a diiierent kind. They are partscomplete in themselves, which enter v into electrical relation with oneanother only by special proximity. An arrangement yoi this kind is showndiagrammatically in the drawing.

What can be obtained in the way of novel effects may be shown b theexample. Here the associated parts o the antenna circuit are mounted ina box, likewise the assot ciated parts for the aperiodic circuit. If thetwo boxes are simply placed alongside one another the usual primaryreceiving is effected.4 If the boxes are shifted apartand .there isplaced between them a box containmg the parts of the secondaeircuit,'sec ondary receiving isvelfected. f it is desired to effecttertiary receiving, one simply places in between them a box containingthe tertiary circuit.

' The improvement obtained can be here only indicated. In addition tothe great ease of inspection there is the most important advantage thatit is possible to adapt the 'receiving apparatus to suit the immediateoccasion. It is possible to select from the various receiving methodsthat which is the most advantageous in a particular case. For exampleshould the operator when receiving be suddenly seriously disturbed witha long wave, he can interpolate a secondary circuit for receiving thedesired wave throu h the combination of a very large self in uction witha ver small condenser. Hereby the long wave 1s weakened to a far greaterextent than the wave being received. If a disturbance Ifrom a very shortwave suddenly arises, the operator, if he has laced, beside and somewhatto the right o the antenna box, the secondary circuit and aperiodiccircuit, would place to the left and alongside the antenna box anothersecondary box, which he tunes to a very short wave whereby it is broughtabout that energy oi the disturbing wave is branched off toward thelatter box and there dissipated. The above embodiments of the inventionare only explanatory examples intended to show what novel effects can bebrought about by the invention. To what an extensive degree the proposedreceiver construction may. be employed will be understood from`the factthat, for example, the chief of a military station has it in his powerto adapt the wireless receiving apparatus of his station to thecapacities of his stai of operators. If his staii' is capable of beingtrusted with the a paratus he will place at their disposal t e box forsecondary receiving. If onthe" otherhand he has to deal with anuntrained personnel, he will limit himself to permitting primaryreceiving and'will lock up everythin not appertalning thereto.` It needhere onl lbe mentloned that one of the errors most to e feared, inparticular with apparatusfitted out for primaryandsecondary receivin isthat the staff, when exploring, shouldI al ow the secondary circuit tobe connected in owin to ignorance of the fact that this circuit y itsselective action` lets through paratus-element must be mounted by itself1n a separate box, it rather suices by the nature of the presentinvention that the 1n- `dividual circuits are separately combined withone another, while it is immaterial whether for this purpose thesecondary circuit is mounted in a box or on a removable plate, or is setin an insertable frame. No one will obviously carry the principle toinexpediency by, for example, carrying the sub-division so far that, forthe production of comparatively simple arrangements, the frequentconnectingI together of small single elements is necessary. 'Theconstructional sub-division would rather conveniently end where such isjustified for electrical reasons, for example, to suit each closedcircuit. Thereby the very economical -advantage is obtained that one candeal with other electrical dimensioning such as becomes necessary, forexample, when employing two different sized antennae on one station,only one other box being inserted for the other antenna while foreverything else, the secondary and aperiodic circuits, may be retained.

Those versed in the art will be able to easily decide upon the mostdesirable arrangement of the apparatus-elements 'ory parts separablefrom one another in such manner that when the element/s are brought intojuxta-position with one another they will enter into the correctelectrical relation so that those elements, e. g. the coils, which areintendedto execute an inductive transfer one to another, are correctlyplaced relatively to one another when the apparatuselements are broughtinto proximity or combined. Separability does not exclude thecontingency that when combination occurs, parts of one apparatus engageinto those of the other e. g., contacts of adjusting devices into 011eanother. These are requirements constructively easy to be fulfilled.

'. I Figure 2 shows a modified embodiment of my invention in which theoperating keys lar one to the other. Accordin Ato Figure/ 3 the keys arearranged on di erent part-s of the horizontal and the vertical wall ofthe casing respectively. .Further the upper plate 15 at the right handof Figure 3 is enabled to be opened so as to be used as a table forwriting purposes.

Having now particularly described and ascertained the nature of my saidinvention and in what manner the same is to be performed -I decla-rethat what I claim is:

1. The combination in high frequency signaling equipment of a pluralityof findividually separable self-contained units each comprising a closedcircuit and radio apparatus associated therewith, said units -beinfrcapable of operating conjointly for sigvna ing purposes when placed in`proper mutual space relation.

2. The combination in high frequency signaling equipment of a pluralityof individually separable self-contained units each 4comprising a boxcontaining a closed circuit and the radio apparatus associatedtherewith, said units being capable of operating conjointly forsignaling purposes when placed in proper mutual space relation.

3. The combination in high frequency signalino equipment of a pluralityof individua 'ly separable self-contained units each comprising a boxcontaining one or more closed circuits and the radio apparatusassociated therewith, all of said units being capable of operatingconjointly and others of said units being capable of operating inconjunction with one or more of the others of said units independentlyof certain other or others of said units.

4. In a radio system, a plurality of different circuits, meansassociated with the respective circuits for performing the usual radiooperations, and consolidating structures securingeach circuit and itsassociated means together to form a unit, whereby the several units maybe separately moved, each as a whole, to enable any selected units to bebrought into cooperative relation.

5. In a radio system, a plurality of stages, each stage including themeans for performing one step in the transformation of signals,consolidating structures constituting each of said stages into a unit,whereby the several units can be separately moved, each as a whole, andthereby any predetermined combination of stages may be properlypositioned for cooperative action.

In testimony whereof I affix my signature.

DR. SIEGMUND LOEWE.

